Finding the Fourth Proportional to 136,197.76, 187,954.38 and 74,944.75
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Solution
The fourth proportional to 136,197.76, 187,954.38 and 74,944.75 is: 103,424.56
Step by Step Solution
- Step 1: Write the proportion equation
136,197.76 : 187,954.38 = 74,944.75 : x - Step 2: Convert to fraction form
136,197.76/187,954.38 = 74,944.75/x - Step 3: Cross multiply
136,197.76x = 187,954.38 × 74,944.75 - Step 4: Simplify right side
136,197.76x = 14,086,193,550.62 - Step 5: Solve for x
x = 14,086,193,550.62/136,197.76 - Step 6: Final answer
x = 103,424.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.